Basa – Identification and Biology

GEOGRAPHY. Geographic range and countries and Chao Phraya basins in Asia, and are native to Cambodia, the Lao People’s Democratic Republic (Lao PDR), Thailand, and VietNam (http://www.fishbase.org).Habitat. Benthopelagic; potamodromous; freshwater (Reide, 2004); known from large rivers (Rainboth, 1996); found in rapids and also in deeper slower reaches and enters flooded forest (http://www.fishbase.org).Migration. When waters recede at the end of the rainy season, juveniles move back to the river and migrate upstream to hold out in deeper pools. With the return of the rainy season, juveniles return to the flood plains to feed. The process continues until sexual maturity when monsoon rain triggers an upstream migration to spawning habitats (Poulsen et al., 2004.